ETC Request ID: STIS.ta.1438068

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.5907 seconds

gives: Time to Saturation (for a single exposure) = 94.47 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 3,581.475 2,115.51 45.99
    Background 0.675 0.40 0.63
        Sky 0.432 0.26 0.51
        Dark Current 0.243 0.14 0.38
    Read Out 26.10
Total in selected region 3,582.150 2,115.91 52.89
Brightest Pixel (single exposure) 1,270.256 750.32
Global Count Rates
    Source only 7,162.950 4,231.026
    Background (sky+dark) 55,864.519 32,998.17
Background per unit area
    Sky Background (arcsec-2) 19.219 11.353
    Dark Current (arcsec-2) 10.800 6.379
Extraction region
box of 3 x 3 pixels
    Effective Sky Area (pixels) 9.00
    Fraction of flux 0.50
    Fraction of flux in brightest pixel 0.18
Effective Wavelength 7518.20 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Flat in units of Fλ
Extinction E(B-V): None
Normalization: Renormalized to abmag = 16.5 in filter Sloan/G
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 28.1